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ACPI: ibm-acpi: backlight device cleanup 

This patch cleans up the recently added backlight device support by Holger
Macht <hmacht@suse.de> to fit well with the rest of the code, using the
ibms struct as the other "subdrivers" in ibm-acpi.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
This commit is contained in:
Henrique de Moraes Holschuh 2006-11-25 16:35:09 -02:00 committed by Len Brown
parent 2df910b4c3
commit fb87a811a4
1 changed files with 31 additions and 19 deletions
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50
drivers/acpi/ibm_acpi.c
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@ -397,7 +397,7 @@ struct ibm_struct {
static struct proc_dir_entry *proc_dir = NULL; static struct proc_dir_entry *proc_dir = NULL;
static struct backlight_device *ibm_backlight_device; static struct backlight_device *ibm_backlight_device = NULL;
#define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off") #define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off")
#define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") #define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled")
@ -1639,6 +1639,7 @@ static int brightness_get(struct backlight_device *bd)
return -EIO; return -EIO;
level &= 0x7; level &= 0x7;
return level; return level;
} }
@ -1713,6 +1714,33 @@ static int brightness_update_status(struct backlight_device *bd)
return brightness_set(bd->props->brightness); return brightness_set(bd->props->brightness);
} }
static struct backlight_properties ibm_backlight_data = {
.owner = THIS_MODULE,
.get_brightness = brightness_get,
.update_status = brightness_update_status,
.max_brightness = 7,
};
static int brightness_init(void)
{
ibm_backlight_device = backlight_device_register("ibm", NULL,
&ibm_backlight_data);
if (IS_ERR(ibm_backlight_device)) {
printk(IBM_ERR "Could not register backlight device\n");
return PTR_ERR(ibm_backlight_device);
}
return 0;
}
static void brightness_exit(void)
{
if (ibm_backlight_device) {
backlight_device_unregister(ibm_backlight_device);
ibm_backlight_device = NULL;
}
}
static int volume_offset = 0x30; static int volume_offset = 0x30;
static int volume_read(char *p) static int volume_read(char *p)
@ -2377,6 +2405,8 @@ static struct ibm_struct ibms[] = {
.name = "brightness", .name = "brightness",
.read = brightness_read, .read = brightness_read,
.write = brightness_write, .write = brightness_write,
.init = brightness_init,
.exit = brightness_exit,
}, },
{ {
.name = "volume", .name = "volume",
@ -2642,20 +2672,10 @@ IBM_PARAM(brightness);
IBM_PARAM(volume); IBM_PARAM(volume);
IBM_PARAM(fan); IBM_PARAM(fan);
static struct backlight_properties ibm_backlight_data = {
.owner = THIS_MODULE,
.get_brightness = brightness_get,
.update_status = brightness_update_status,
.max_brightness = 7,
};
static void acpi_ibm_exit(void) static void acpi_ibm_exit(void)
{ {
int i; int i;
if (ibm_backlight_device)
backlight_device_unregister(ibm_backlight_device);
for (i = ARRAY_SIZE(ibms) - 1; i >= 0; i--) for (i = ARRAY_SIZE(ibms) - 1; i >= 0; i--)
ibm_exit(&ibms[i]); ibm_exit(&ibms[i]);
@ -2758,14 +2778,6 @@ static int __init acpi_ibm_init(void)
} }
} }
ibm_backlight_device = backlight_device_register("ibm", NULL,
&ibm_backlight_data);
if (IS_ERR(ibm_backlight_device)) {
printk(IBM_ERR "Could not register ibm backlight device\n");
ibm_backlight_device = NULL;
acpi_ibm_exit();
}
return 0; return 0;
} }